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Finding the Fourth Proportional to 696,001.53, 960,549.54 and 390,129.87

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Solution

The fourth proportional to 696,001.53, 960,549.54 and 390,129.87 is: 538,417.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,001.53 : 960,549.54 = 390,129.87 : x
  2. Step 2: Convert to fraction form
    696,001.53/960,549.54 = 390,129.87/x
  3. Step 3: Cross multiply
    696,001.53x = 960,549.54 × 390,129.87
  4. Step 4: Simplify right side
    696,001.53x = 374,739,067,168.76
  5. Step 5: Solve for x
    x = 374,739,067,168.76/696,001.53
  6. Step 6: Final answer
    x = 538,417.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.